Trailing-truck frame



Jan. 29,, I924.

JIG. BLUNT TRA ILI NG TRUCK FRAME 2 Sheets-Sheet 1' Filed May 15, 1923FIGJ.

A. WITNESSES 5m J. G. BLUNT TRAILING TRUCK FRAME Jan. 29, 1924 1,482,183

Filed May 15, 1925 2 ShQetS Shee t 2 Patented Jan, 29, 192%,

' JAMES G. BLUNT, OF SCHENECTQJDY, NEW YORK.

, TRAILING-TEUCK rennin.

Application filed Kay 15, 1923. Serial Ho. 639,047.

To all whom it may concern:

Be it known that I, JAMES G. BLUNT, a citizen of the United States,residing at Schenectady, in the county of Schenectady and State of NewYork, have invented a certain new and useful Improvement inTrailing-Truck Frames, of which improvement the following is aspecification.

My invention relates to radial trailing trucks for locomotive engines,and its ob ject is to provide a frame for trucks of such type, whichshall be of strong, but comparatively light construction, and be exemptfrom the structural and operative disadvantages which obtain in truckframes comprising separate members connected by bolts.

The im rovement claimed is hereinafter fully set orth.

In the accompanying drawings: Figure 1 is aplan view of a trailing truckembodying my invention; Fig. 2, a side view, in elevation, of the same;Fig. 3, a plan view of the frame, with the accessories detached; 5 Fig.i, a side view, in elevation, of the same; and, Fig. 5, an end view, asseen from the rear.

In the practice of my invention, referring descriptively to the specificembodiment 0 thereof which is herein exemplified, the truck frame isformed in an integral casting,

which comprises two side members, 1, 1.;

two radius bar arms, 2, 2, which extend forwardly and inwardly from theside mem here and are joined at their forward ends to a hub or boss, 3,in which is formed a socket, 3*, for a radius bar pin; a transverse rearmember, 4:; two journal boxes, 5,

are, 1n turn, supported on the journal box plates, 6. Yokes, 10, adaptedto be pivotally coupled to the main frame of the 10- comotive, areconnected to the spring seats.

All the members of the truck frame being, as above described,comprehended in an integral casting, proportioned as may be required toafford proper strength and rigidity, the structural costs of machiningseparate members of 'aframe where accurate fitting together isnecessary, or particularly desirable, and of providing bolt connectionsare avoided, and in operative service, there is, of course, no liabilityto accidental detachment of parts of the frame.

I claim as my invent-ion and desire to secure by Letters Patent:

An integral trailing truck frame comprising two side members; twoinwardly inclined radius bar arms, extending therefrom to aradius barpin box; two journal boxes, each extending-outwardly from one of theside members; and a transverse member connectin the rear .ends of the,

side members.

JAMES G. BLUNT. I/Vitnesses: I J. HOWARD WAGAR, MADELINE U Uoxnn.

